Pros
Great opportunities to travel the world and make an impact abroad. Coworkers are very smart and capable. Lots of training opportunities.
Cons
The ranking system is completely based on politics. People are force ranked in a straight line and the ranking is based on your perceived relative performance as compared with your peer group. You can get ranked very low for doing an excellent job because a manager perceives that you didn't do your own job as well as someone else (or they just like this person more) with a similar or even unrelated job. Getting ranked low once is almost impossible to come back from as the ranking is cumulative instead of different year to year. Managers and supervisors don't have your back either though there are exceptions. All of this fosters a hyper-competitive and stressful environment that is counterproductive to teamwork and collaboration. New positions or opportunities are usually forced on you as there are no internal postings. Saying no to a position is essentially a death knell for your career despite the circumstances of your decline. Work/life balance is non-existent. People work from early in the morning to late at night 5 days a week and people come in on the weekend.